Using a resistor divider for this is probably a bad idea, for a few reasons: ground isolation, electromagnetic compatibility, and whether the 12V output (and I'm assuming it's a 12V output from the alarm system that you're trying to monitor from the Pi) even has a full push-pull topology. The breadboard is then connected to the Pi via a cable (not sure what the cable is called). The following image is of the wires connected to the breadboard. I'm feeding the Pi with the wires attached to pin 6 and 7 as shown in the circuit. The circuit diagram of the panel is attached below. The model of the Alarm panel is a Honeywell Vista 20p. The clock and data lines are both being downgraded to a 3 V input line by passing through this circuit (2 circuits on a breadboard). I had to use a bunch of 1 kΩ and another 300 Ω resistor because I didn't have a 3300 K resistor in my small kit. I'm feeding the GPIO pin of the Pi with a jumper wire to the end of the R1 resistor. Notes: In the circuit diagram below the voltage source is pretty much the data and the clock lines coming out from the alarm panel. Can anyone tell me how to read the data and clk inputs correctly? This value does not change even if there is an event that occurs in the alarm panel (opening doors, etc.). I'm reading the pin input via Pi4J and it seems to give me a HIGH and LOW respectively for the 2 pins. I now have the leads from the bridge plugged into the GPIO pins on a Raspberry Pi. I've managed to lower the voltage from the 12 V or so down to 3 V (approx.) using a resistor bridge. I've been working on a similar project as this but with a Honeywell alarm system. Simulate this circuit – Schematic created using CircuitLab Now all of a sudden it Only shows up in a totally different state and with exact name search. Is there something I could do to send signals to Google to show that I am in Matthews, NC?Ģ months ago my listing quit showing up at all unless you typed exact business name What could possibly cause my listing or Google to do this? I have been without my listing for a few months now and have NO calls coming in from it. If you search Locksmith Independence, KS it shows up on the maps. If you search Locksmith Matthews, NC my listing does not show up at all. Keep in mind the GMB is in Matthews, NC All my service areas and the actual map show the correct areas. Now if I search my business name under the auto populate I see it with Independence, KS on the listing. I pretty much do not have any traffic, views or calls now. Posted about my SAB listing a few weeks ago about not showing up in search only when you entered the exact name.

Honeywell galaxy alarm keypad protocol